build/cogl: Simplify debug c-args

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3806>

cogl/cogl/driver/gl/cogl-util-gl-private.h

@@ -42,7 +42,7 @@
 #define GL_CONTEXT_LOST GL_CONTEXT_LOST_KHR
 #endif
 
-#ifdef COGL_GL_DEBUG
+#ifdef COGL_ENABLE_DEBUG
 
 const char *
 _cogl_gl_error_to_string (GLenum error_code);
@@ -69,12 +69,12 @@ _cogl_gl_error_to_string (GLenum error_code);
                  _cogl_gl_error_to_string (__err));     \
     }                                   } G_STMT_END
 
-#else /* !COGL_GL_DEBUG */
+#else /* !COGL_ENABLE_DEBUG */
 
 #define GE(ctx, x) ((ctx)->x)
 #define GE_RET(ret, ctx, x) (ret = ((ctx)->x))
 
-#endif /* COGL_GL_DEBUG */
+#endif /* COGL_ENABLE_DEBUG */
 
 typedef struct _CoglGLContext {
   GArray           *texture_units;

cogl/cogl/driver/gl/cogl-util-gl.c

@@ -58,7 +58,7 @@
 #define GL_UNKNOWN_CONTEXT_RESET_ARB 0x8255
 #endif
 
-#ifdef COGL_GL_DEBUG
+#ifdef COGL_ENABLE_DEBUG
 /* GL error to string conversion */
 static const struct {
   GLuint error_code;
@@ -94,7 +94,7 @@ _cogl_gl_error_to_string (GLenum error_code)
 
   return "Unknown GL error";
 }
-#endif /* COGL_GL_DEBUG */
+#endif /* COGL_ENABLE_DEBUG */
 
 CoglGLContext *
 _cogl_driver_gl_context (CoglContext *context)
@@ -301,7 +301,7 @@ _cogl_gl_util_catch_out_of_memory (CoglContext *ctx, GError **error)
     {
       if (gl_error == GL_OUT_OF_MEMORY)
         out_of_memory = TRUE;
-#ifdef COGL_GL_DEBUG
+#ifdef COGL_ENABLE_DEBUG
       else
         {
           g_warning ("%s: GL error (%d): %s\n",

cogl/meson.build

@@ -86,8 +86,6 @@ cogl_debug_c_args = []
 if buildtype != 'plain'
   if get_option('debug')
     cogl_debug_c_args += [
-      '-DCOGL_GL_DEBUG',
-      '-DCOGL_OBJECT_DEBUG',
       '-DCOGL_ENABLE_DEBUG',
     ]
   else